Well, Naruto is a really strong - willed character. So, at first he'd be really hurt. But then, he would probably try to figure out why his family has forgotten him. He might go on a journey to find answers, all the while dealing with the pain of this rejection. He could also be angry at his family for forgetting him so easily, especially considering all he's been through.
One possible reason could be some kind of dark magic or jutsu that has affected his family's memories. Maybe an enemy cast a spell specifically to make his family forget about him to weaken him.
The 'naruto forgotten by family fanfic' might explore Naruto's emotional journey as he deals with being forgotten. He could start to question his identity and his place in the family. As he tries to get his family's attention back, he may discover secrets about his family that were previously hidden. He might also face challenges from those who don't want his family to remember him, and he would have to fight against them while also trying to re - establish his connection with his family.
One possible plot could be that Naruto's family, perhaps due to some dark magic or a curse, completely forgets who he is. Naruto then has to struggle not only with his normal challenges in the ninja world but also with the heartbreak of being forgotten by his own family. He might try to find a way to reverse the situation while also facing enemies who take advantage of his family's memory loss.
Naruto may try to find out the reason why he is forgotten. He will start by reflecting on his own actions. Maybe he thinks he has done something wrong that made his family forget him. Then he will strive to correct it. At the same time, he might also seek help from his friends like Sasuke and Sakura, who always stand by him.
Maybe it's an evil organization that wants to isolate Naruto. By making his family forget him, they hope to break Naruto's spirit and prevent him from becoming a powerful force in the ninja world. So they target his family's memories as a way to get to him.
Maybe there was some kind of powerful jutsu or curse involved. It could be that an enemy cast a spell on Naruto's family, making them forget about him.
In this kind of situation, Naruto might first feel extremely sad and lonely. He could start by trying to prove himself to others. Maybe he'd focus on his ninja training more than ever, using it as a way to distract himself from the pain of being forgotten by his parents.
One possible plot could be that Naruto, having reached the Jounin level, is suddenly shunned by his family. Maybe due to some false accusations or misunderstandings within the family. His family might cut off all communication with him, leaving Naruto to fend for himself while still carrying out his Jounin duties. He would have to struggle not only with the regular challenges of being a Jounin but also with the emotional pain of being forgotten by those he loves.